• 한국독성학회:학술대회논문집
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• 한국독성학회 1997년도 국제 심포지움 및 춘계 학술대회
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• pp.65-74
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• 1997

By using guinea pig lung mast cells, this study aimed to examine the effects of Aloe component(NY945) on the mediator releases caused by mast cell activation, and also aimed to assess the effects of NY945 on the mechanism of mediator releases in the mast cell activation. We partially purified mast cells from guinea pig lung tissues by using the enzyme digestion, the rough and the discontinuous density percoll gradient method. Mast cells were sensitized with $IgG_1$ (anti-OA) and challenged with ovalbumin. Histamine was assayed by fluorometric analyzer, leukotrienes by radioimmunoassay The phospholipase D activity was assessed more directly by the production of labeled phosphatidylethanol or phosphatidylbutanol which was produced by phospholipase D-mediated transphosphatidylation in the presence of ethanol or butanol. The amount of mass 1,2-diacylglycerol was measured by the [$^3H$]1,2-diacylgycerol produced when prelabeled with [$^3H$]myristic acid. In the mast cells prelabeled with L-[$^3H$]methyl methionine the phospholipid methylation was assessed by measuring the incorporation of the [$^3H$]methyl moiety into phospholipids. Pretreatment of NY945(10$\mu$g) significantly decreased histamine and leukotrienes releases during mast cell activation. The decrease of histamine release was stronger than that of leukotrienes during mast cell activation. The phospholipase D activity increased by the mast cell activation was decreased by the dose-dependent manner in the pretreatment of NY945. The amount of mass 1,2-diacylglycerol produced by activation of mast cells were decreased in the pretreatment of NY945. NY945 pretreatment strongly inhibited the incorporation of the [$^3H$]methyl moiety into phospholipids. The data suggest that NY945 purified from Aloe inhibits in part an increase of 1,2-diacylglycerol which is produced by activating mast cells with antigen-antibody complexes which is mediated via phosphatidylcholine-phospholipise D and phosphatidylinositole-phospholipise C systems, and then followed by the inhibition of histamine release. Furthermore, NY945 reduces the phosphatidylcholine production by inhibiting the methyltransfsrase I and II, which decrease the conversion of phosphatidylcholine into arachidonic acid and inhibits the production of leukotrines.

• IMMUNE NETWORK
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• 제5권2호
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• pp.68-77
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• 2005

Background: Costimulation is a critical process in Ag-specific immune responses. Both B7.1 and CD28 molecules have been reported to stimulate T cell responses during antigen presentation. Therefore, we tested whether Ag-specific immune responses as well as protective immunity are influenced by coinjecting with B7.1 and CD28 cDNAs in a mouse HSV-2 challenge model system. Methods: ELISA was used to detect levels of antibodies, cytokines and chemokines while thymidine incorporation assay was used to evaluate T cell proliferation levels. Results: Ag-specific antibody responses were enhanced by CD28 coinjection but not by B7.1 coinjection. Furthermore, CD28 coinjection increased IgG1 production to a significant level, as compared to pgD+pcDNA3, suggesting that CD28 drives Th2 type responses. In contrast, B7.1 coinjection showed the opposite, suggesting a Th1 bias. B7.1 coinjection also enhanced Ag-specific Th cell proliferative responses as well as production of Th1 type cytokines and chemokines significantly higher than pgD+pcDNA3. However, CD28 coinjection decreased Ag-specific Th cell proliferative responses as well as production of Th1 types of cytokines and chemokine significantly lower than pgD+pcDNA3. Only MCP-1 production was enhanced by CD28. B7.1 coimmunized animals exhibited an enhanced survival rate as well as decreased herpetic lesion formation, as compared to pgD+pcDNA3. In contrast, CD28 vaccinated animals exhibited decreased survival from lethal challenge. Conclusion: This study shows that B7.1 enhances protective Th1 type cellular immunity against HSV-2 challenge while CD28 drives a more detrimental Th2 type immunity against HSV-2 challenge, supporting an opposite role of B7.1 and CD28 in Ag-specific immune responses to a Th1 vs Th2 type.

• Clinical and Experimental Reproductive Medicine
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• 제9권1_2호
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• pp.43-53
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• 1982

여성의 난소기능은 뇨중 Oestrone-3-glucuronide를 간편한 solid-phase 의 화학발광성 면역학적 측정법 (Chemiluminescence Imrnunoassay(CIA) 에 의하여 그 기능이 탐지될 수 있다. Oestrone-3-g1ucuronyl-6-bovine serum albumine에 대한 antiserum의 IgG fraction은 polystyrene 실험관벽에 흡착시켰으며, 항원으로서는 est r one-3- gl ucuronyI-6-aminoethyl-ethyl-isoluminol 을 항원 (antigen) 에 labeI 시킨 것이다. 시험 대상물인 뇨는 매일아침뇨(early morning urine) 을 희석 (1:1000 V/V)한 후 100mcl 를 취하여 이를 각기 이중분석액으로 택하였다. 시험관 내에서 결합반응 (1 hour at $4^{\circ}C)이 일어난 후에는 시험관내의 액체를 전부 흡입 폐기시켰으며, 항체반응이 일어난 후 ( antibody-bound fraction )에는 완충액 (400mcl)으로 한번 세척시켰다. 그후 염화수산화물(2N , 200mcl)을 가지고 $22^{\circ}C$에 60 분간 방치 혼합케 한 후 효소(microperoxidase) 와 과산화수소를 가하면서 산화작용에서 발생되는 발광양을 10초동안 측정하여 그 결과를 분석하였다. 위에 기술한 분석방법을 평가하면 다음과 같은 결론을 얻었다. Calibration curve sensitivity$3.12{\pm}0.75$ PG/tube ($mean{\pm}SD$)였고, lntra-assay precision(CV%) 9.52 (20 replicates;$38.4{\pm}3.66$nmol/1) 와 8.81 (15 replicates; $102.4{\pm}8.82$nmol/1)였다. Inter-assay precision(CV%) 은 11.9 (mean of 4 pools-7.03, 23.16, 52.11 과 117.53 nmol/1)로 2개월 동안에 걸쳐 시행되었고, 평균 비이어스(mean bias)는 -0.78 로 28에서 448 nmol 범위로서 매일아침 "뇨"의 차이분(different aliquots)은 좋은 결과를 얻었다. 건강한 여성으로부터 채취된 뇨중 Oestrone-3-glucuronide 의 농도(nmol/1)를 보면 월경주기의 여포기와 배난기 및 황체기에 있어서 각기 $40.2{\pm}9.9$ , $102.3{\pm}39.4$와 $84.3{\pm}13.3$nmol/1였다. 이와같은 결과는 동일한 검사뇨를 방사면역학적 방법(RIA)으로 측정 (6 menstrual cycle)한 결과와 유사한 측정치를 얻으므로서 간편하고 진보된 좋은 방법중의 하나라고 사료되는바이다.

• Parasites, Hosts and Diseases
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• 제51권2호
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• pp.155-163
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• 2013

This study aimed to evaluate the efficacy of fructose-1,6-bis phosphate aldolase (SMALDO) DNA vaccination against Schistosoma mansoni infection using different routes of injection. The SMALDO has been cloned into the eukaryotic expression vector pcDNA3.1/V5-His TOPO-TA and was used in injecting Swiss albino mice intramuscularly (IM), subcutaneously (SC), or intraperitoneally (IP) ($50{\mu}g/mouse$). Mice vaccinated with non-recombinant pcDNA3.1 served as controls. Each group was immunized 4 times at weeks 0, 2, 4, and 6. Two weeks after the last booster dose, all mice groups were infected with 80 S. mansoni cercariae via tail immersion. At week 8 post-infection, animals were sacrificed for assessment of parasitological and histopathological parameters. High anti-SMALDO IgG antibody titers were detected in sera of all vaccinated groups (P<0.01) compared to the control group. Both the IP and SC vaccination routes resulted in a significant reduction in worm burden (46.2% and 28.9%, respectively, P<0.01). This was accompanied by a significant reduction in hepatic and intestinal egg counts (41.7% and 40.2%, respectively, P<0.01) in the IP group only. The number of dead eggs was significantly increased in both IP and IM groups (P<0.01). IP vaccination recorded the highest significant reduction in granuloma number and diameter (54.7% and 29.2%, respectively, P<0.01) and significant increase in dead miracidia (P<0.01). In conclusion, changing the injection route of SMALDO DNA vaccination significantly influenced the efficacy of vaccination. SMALDO DNA vaccination via IP route could be a promising protective and antipathology vaccine candidate against S. mansoni infection.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제2권2호
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• pp.233-239
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• 1999

Acrodermatitis enteropethica (AE) is a rare autosomal recessive disorder of zinc absorption leading to chronic diarrhea and characteristic skin lesion. The term is also applied to any acquired zinc deficiency state resulting in the same clinical pictures. We experienced one case of AE in 1 month old male infant who had bacterial enterocolitis. The skin around mouth, anus, eyes, ears, hands and legs became reddish, vesicular and eczematoid. Serum zinc level was decreased to $51.4\;{\mu}g/dL$ (N=70~150). Endoscopic finding revealed pale gastric mucosa and villous atrophy of small intestine. Biopsy finding of small intestine showed no villi due to mucosal atrophy. On 13 day of admission jaundice with DIC were noted and AST & ALT were elevated to 110 & 36.8 IU/L, respectively. Diarrhea was improved but jaundice and liver function were not recovered until discharge from hospital. After discharge when the patient was 4 months of age serum bilirubin and AST/ALT had not been normalized. CMV shell vial culture of urine and CMV Ig G antibody were positive. So intravenous ganciclovir injection of 7.5 mg/kg, two times a day for 2 weeks and then 10 mg/kg/day for 3 months was done from 4 to 6 months of age. No virus was found in the urine and AST & ALT were normalized at 2 months after stopping ganciclovir treatment.

• Pediatric Infection and Vaccine
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• 제9권2호
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• pp.215-221
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• 2002

목 적 : 홍역 증상으로 입원한 환아와 홍역이외에 소아기에 흔한 모세기관지염, 폐렴, 위장염 등 기타 감염성 질환으로 입원한 환아들의 비타민 A치를 비교해 보고자 본 연구를 시행하였다. 방 법 : 2000년 11월부터 2001년 4월까지 강남성심병원 소아과에 홍역증상으로 입원한 환아 133례와 2001년 12월부터 2002년 2월까지 기타 감염성질환으로 입원한 환아 30례를 대상으로, 홍역 특이 IgM 항체 양성이었던 환아를 홍역환아군, IgM 항체 음성인 환아를 홍역의증군, 홍역이외 기타 감염성질환군을 대조군으로 하여 나누어 각 군의 비타민 A치, 임상증상, 입원기간, 일반혈액검사 등을 비교 조사하였다. 결 과 : 1) 홍역으로 확진된 104례 중 10~12개월(n=24, 23%), 13~15개월(n=16, 15.3%) 및 16개월~4세 연령군(n=24, 23%)이 가장 많았다. 2) 홍역환아군과 홍역의증군의 비타민 A 평균치는 각각 $69.6{\pm}28.6{\mu}g/dL$, $75.2{\pm}34.4{\mu}g/dL$이었으며, 기타 감염성질환군의 평균치($28.1{\pm}17.5{\mu}g/dL$)보다 유의하게 높았다(P<0.05). 3) 비타민 A치와 백혈구 수치, 발열지속기간과 입원기간은 모든 군에서 유의한 차이가 없었다(P> 0.05). 4) 비타민 A치는 2세 이상군과 2세 미만군을 비교할 때 모든 군에서 유의한 차이가 없었다(P> 0.05). 5) 비타민 A치는 모든 군에서 GOT/GPT와 상관관계는 없었으나, 홍역 증상으로 입원한 환아군에서 기타 감염성질환군에 비해 유의하게 증가되어 있었다. 그러나 말초혈액 및 다른 생화학 검사소견은 유의한 차이가 없었다(P>0.05). 결 론 : 홍역환아군과 홍역의증군의 비타민 A 평균치는 기타 감염성질환군의 비타민 A 평균치보다 유의하게 높았으나(P<0.05), 임상증상의 중증도 및 재원일수와 유의한 상관관계가 없었다.

• 동의생리병리학회지
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• 제21권1호
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• pp.39-49
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• 2007

Rheumatoid arthritis is an autoimmune disease involving multiple joint. In order to access the suppressive effects of JTT on rheumatoid arthritis and it's effects on immune system we investigated whether JTT could suppress the disease progression of collagen-induced arthritis. DBA/1 mice were immunized with bovine type II collagen. After a second collagen immunization, mice were treated with DW, JTT (200 or 400 mg/kg) or methotrexate (MTX, 30 mg/kg) as a positive control. Oral administration of JTT significantly suppressed the progression of CIA, which extend is comparable to that of MTX. Histological examination reveled that JTT inhibited infiltration of inflammatory cells into affected paw joint and bone erosion and cartilage destruction were greatly reduced compared with control. Total cell number of spleen, lymph node and peripheral blood were significantly reduced. The absolute number of CD19$^+$, CD3$^+$/CD69$^+$, CD4$^+$/CD25$^+$ cell in spleen from JTT treated mice were significantly decreased. The absolute number of CD19$^+$, CD3$^+$, CD3$^+$/CD69$^+$, CD4$^+$, CD4$^+$/CD25$^+$ CD8$^+$, CD49b, CD3/CD49b cells in draining lymph node were significantly increased compared with control. In peripheral blood mononuclear cells of JTT treated mice, the absolute number of CD4$^+$, CD4$^+$/CD25$^+$, CD3$^+$/CD69$^+$ cells were significantly decreased compared with control, while that of CD49b$^+$ was slightly increased. Infiltration of CD3$^+$ cells and CD11b$^+$/Gr-1$^+$ cells into paw joint was significantly reduced in JTT treated mice. The levels of pathologic cytokines including TNF-a and IL-6 in serum were significantly decreased by oral treatment with JTT The levels of IFN-g in the culture supernatant of splenocyte stimulated with CD3$^+$/CD28$^+$ or collagen were dramatically decreased, while the levels of IL-4 was increased under CD3$^+$/CD28$^+$ or collagen stimulation. Rheumatoid factors including IgG, IgM and collagen specific antibody were present much lower in the serum of JTT treated mice than control. Taken together, JTT has suppressive effects on rheumatoid arthritis by modulating immune system, and has potential to use anti-rheumatic arthritic agent in human.

• 한국어병학회지
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• 제27권1호
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• pp.1-9
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• 2014

저수온기만 넙치에 대량 폐사를 일으키는 바이러스성 출혈성 패혈증을 폐사가 발생하는 $15^{\circ}C$, 폐사가 발생하지 않는 $20^{\circ}C$에서 인공감염시켜 넙치의 면역 유전자 발현 profile을 cDNA microarray 분석하였으며, 특히 저수온기에 폐사가 나타나는 원인을 면역 유전자 발현과 관련시켜 알아보고자 하였다. $15^{\circ}C$, $20^{\circ}C$의 감염 세포구에 공통으로 발현되는 유전자는 MHC class I, IL-8, myeloperoxidase 및 endonuclease G-like 유전자로 모든 세포표면에 존재하여 항원을 제시하거나 호중구 주화성을 자극하는 유전자들이었다. 항원 가공 및 제시, 항체 생성에 관여하는 MHC class II, immunoglobulin (Ig)과 retinoblastoma 등의 유전자는 $20^{\circ}C$에서는 발현이 증가하였으나 $15^{\circ}C$에서는 발현이 감소되었다. 이로부터 폐사가 발생하지 않는 $20^{\circ}C$는 바이러스 감염초기의 항원 제시, MHC class I과 II에 의한 항원제시, apoptosis 및 이후의 항체 생산이 정상적으로 이루어져 폐사가 발생하지 않는 것으로 생각되었다. 그러나 폐사가 발생하는 $15^{\circ}C$에서는 MHC class I매개의 항원 제시와 탐식 작용등의 선천 면역은 이루어지나 macrophage에 의한 MHC class II매개의 항원 제시와 apoptosis저하, 항체 생산 관련 유전자의 발현저하가 관찰되어 초기 macrophage에 의한 항원제시의 실패로 적응 면역이 제대로 활성화되지 않아 폐사가 발생한 것으로 사료된다.

• Parasites, Hosts and Diseases
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• 제37권3호
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• pp.163-169
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• 1999

House dust mite allergens have been well established as sensitizing agents that are important in the induction of allergic diseases. In order to analyze epitopes of the allergen and to develop a quantitative method of the allergen exposure, monoclonal antibodies against a recombinant Der p 2 (rDer p 2), one of the major allergens of Dermatophogoides pteronyssinus, were produce. Four monoclonal antibodies produced wee species-specific and did not cross-react to the D. farinae crude extract. Two of the monoclonal antibodies were found to be IgG1 and the others were IgM. For the analysis of epitopes, a Der p 2 cDNA encoding 126 amino acids (aa) was dissected into three fragments with several overlapping peptides, A (aa residues 1-49), B (44-93), and C fragment (84-126). Three monoclonal antibodies showed reactivities to the recombinant B fragment and to the full-length rDer p 2, but one monoclonal antibody reacted only with the full-length rDer p 2. Two-site capture ELISA was developed using two different monoclonal antibodies for quantitating Der p2 in house dust. The sensitivity limit was 4ng/ml with rDer p2 and $8{\;}\mu\textrm{g}/ml$ with the d. pteronyssinus crude extract. The result suggested that the assay using monoclonal antibodies against rDer p2 could be useful for the environmental studies and for the standardization of mite allergen extracts.

• Clinical and Experimental Pediatrics
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• 제50권3호
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• pp.262-267
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• 2007

목 적 : A형 간염 유병률은 그 지역의 생활환경과 위생상태와 밀접한 관계가 있으며 시간 및 지역에 따라 다양한 양상을 보인다. 최근에 들어와 A형 간염 유병률의 변화에 대하며 많은 이들이 보고하여 왔다. 이에 본 연구는 부산 지역에 거주하는 소아과 성인을 대상으로 A형 간염 항체 유병률을 측정하였다. 방 법 : 부산시에 거주하고 2004년 10월부터 2005년 3월까지 메리놀병원에 입원한 472명을 대상으로 하였으며 전 연령층의 혈청으로부터 면역방사계수 측정법을 이용하여 항 A형 바이러스 IgG 항체 유무를 측정하였다. 결 과 : 1) A형 간염 IgG 항체 양성률은 총 472명 중 108명에서 항체가 검출되어 22.8%이었고, 2-5세가 1.7%, 6-10세가 1.7%, 11-20세가 0%, 21-30세가 40.5%, 31-40세가 82.1%, 41-50세가 94.7%, 51세 이상이 100%로 조사되었다. 2) 각 연령군 모두에서 남녀간의 항체 양성률(P=0.2)간에 유의한 차이는 없는 것으로 나타났다. 결 론 : 우리 나라에서는 최근 경제발전과 더불어 생활환경이 향상되어 A형 간염 항체 양성률이 지난 20년 전보다 현저하게 감소되었다. 현재 소아 연령에서 A형 간염 항체 보유율이 매우 낮아 이들이 성인이 되는 경우 현증 A형 간염의 유행이 초래될 가능성이 높아지고 있다. 따라서 개인위생 및 생활환경을 개선하고, 고위험군을 대상으로 수동면역 및 능동면역을 시행하여 바이러스의 전파를 막아 A형 간염의 발생을 적극적으로 예방하여야 하겠다.